
function Quart(){}
	
	
Quart.easeIn = function(t, b, c, d) 
{
	return c*(t/=d)*t*t*t + b;
};

Quart.easeOut = function(t, b, c, d) 
{
	return -c * ((t=t/d-1)*t*t*t - 1) + b;
};

Quart.easeInOut = function(t, b, c, d) 
{
	if ((t/=d*0.5) < 1) return c*0.5*t*t*t*t + b;
	return -c*0.5 * ((t-=2)*t*t*t - 2) + b;
};